C++ QTextFrame::lastCursorPosition方法代码示例

            void operator()( const pugi::xpath_node& node, QTextFrame * pframe = 0, int level = 0 ) const {

                QTextCursor cursor = edit.textCursor();
                if ( pframe )
                    cursor = pframe->lastCursorPosition();

                cursor.insertText( tagString( node ), tagFormat ); // <----------- <tag>

                auto frame = cursor.insertFrame( frameFormat );    // <-------------- insert frame
                QObject::connect( frame, &QTextFrame::destroyed, &edit, &docEdit::handleBlockDeleted );
                
                // body
                if ( std::strcmp( node.node().name(), "title" ) == 0 ) {

                    cursor.insertText( QString::fromStdString( node.node().text().get() ), headingFormat );
                }
                else if ( std::strcmp( node.node().name(), "paragraph" ) == 0 ) {

                    cursor.insertText( QString::fromStdString( node.node().text().get() ), paragraphFormat );
                }
                else {

                    cursor.insertText( QString::fromStdString( node.node().text().get() ), plainFormat );
                }

                // process childlen 
                for ( auto& child : node.node().select_nodes( "./*" ) ) {
                    (*this)(child, frame, level + 1);
                }
                cursor = pframe ? pframe->lastCursorPosition() : mainFrame->lastCursorPosition();
                cursor.insertText( QString( "</%1>" ).arg( node.node().name() ), tagFormat ); // </tag>
            }

MainWindow::MainWindow()
{
    QMenu *fileMenu = new QMenu(tr("&File"));

    QAction *saveAction = fileMenu->addAction(tr("&Save..."));
    saveAction->setShortcut(tr("Ctrl+S"));

    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
    quitAction->setShortcut(tr("Ctrl+Q"));

    menuBar()->addMenu(fileMenu);
    editor = new QTextEdit();

    QTextCursor cursor(editor->textCursor());
    cursor.movePosition(QTextCursor::Start); 

    QTextFrame *mainFrame = cursor.currentFrame();
    
    QTextCharFormat plainCharFormat;
    QTextCharFormat boldCharFormat;
    boldCharFormat.setFontWeight(QFont::Bold);
/*  main frame
//! [0]
    QTextFrame *mainFrame = cursor.currentFrame();
    cursor.insertText(...);
//! [0]
*/
    cursor.insertText("Text documents are represented by the "
                      "QTextDocument class, rather than by QString objects. "
                      "Each QTextDocument object contains information about "
                      "the document's internal representation, its structure, "
                      "and keeps track of modifications to provide undo/redo "
                      "facilities. This approach allows features such as the "
                      "layout management to be delegated to specialized "
                      "classes, but also provides a focus for the framework.",
                      plainCharFormat);

//! [1]
    QTextFrameFormat frameFormat;
    frameFormat.setMargin(32);
    frameFormat.setPadding(8);
    frameFormat.setBorder(4);
//! [1]
    cursor.insertFrame(frameFormat);

/*  insert frame
//! [2]
    cursor.insertFrame(frameFormat);
    cursor.insertText(...);
//! [2]
*/
    cursor.insertText("Documents are either converted from external sources "
                      "or created from scratch using Qt. The creation process "
                      "can done by an editor widget, such as QTextEdit, or by "
                      "explicit calls to the Scribe API.", boldCharFormat);

    cursor = mainFrame->lastCursorPosition();
/*  last cursor
//! [3]
    cursor = mainFrame->lastCursorPosition();
    cursor.insertText(...);
//! [3]
*/
    cursor.insertText("There are two complementary ways to visualize the "
                      "contents of a document: as a linear buffer that is "
                      "used by editors to modify the contents, and as an "
                      "object hierarchy containing structural information "
                      "that is useful to layout engines. In the hierarchical "
                      "model, the objects generally correspond to visual "
                      "elements such as frames, tables, and lists. At a lower "
                      "level, these elements describe properties such as the "
                      "style of text used and its alignment. The linear "
                      "representation of the document is used for editing and "
                      "manipulation of the document's contents.",
                      plainCharFormat);


    connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));

    setCentralWidget(editor);
    setWindowTitle(tr("Text Document Frames"));
}

void Format::parseFrame( QTextCursor &cursor, const QDomElement &element )
{
  QTextBlock extraBlock;
  bool hasExtraBlock = false;

  QDomNode n;
  for( n = element.firstChild(); !n.isNull(); n = n.nextSibling() ) {
    QDomElement e = n.toElement();
    if ( e.tagName() == "block" ) {
      if ( e.hasAttribute( "liststyle" ) ) {
        cursor.setCharFormat( TextFormats::normalCharFormat() );
        QTextListFormat f;
        f.setIndent( e.attribute( "listindent" ).toInt() );
        if ( e.attribute( "liststyle" ) == "decimal" ) {
          f.setStyle( QTextListFormat::ListDecimal );
        } else {
          f.setStyle( QTextListFormat::ListDisc );
        }
        cursor.mergeBlockFormat( TextFormats::normalBlockFormat() );
        cursor.insertList( f );
      } else if ( n != element.firstChild() ) {
        QTextBlockFormat f;
        if ( e.hasAttribute( "blockindent" ) ) {
          f.setIndent( e.attribute( "blockindent" ).toInt() );
        } else {
          f.setIndent( 0 );
        }
        if ( hasExtraBlock ) {
          QTextCursor c( extraBlock );
          c.setBlockFormat( f );
          hasExtraBlock = false;
        } else {
          cursor.insertBlock( f );
        }
      }
      if ( e.hasAttribute( "lastmodified" ) ) {
        QString str = e.attribute( "lastmodified" );
        QDateTime dt = QDateTime::fromString( str, Qt::ISODate );
        TextFormats::setLastModified( cursor, dt );
      }
      parseBlock( cursor, e );

      if ( e.hasAttribute( "titlestyle" ) ) {
        if ( e.attribute( "titlestyle" ) == "title" ) {
          cursor.mergeBlockFormat( TextFormats::titleBlockFormat() );
        } else if ( e.attribute( "titlestyle" ) == "subtitle" ) {
          cursor.mergeBlockFormat( TextFormats::subTitleBlockFormat() );
        }
      } else {
        cursor.mergeBlockFormat( TextFormats::normalBlockFormat() );
      }
    } else if ( e.tagName() == "frame" ) {
      QTextFrame *parentFrame = cursor.currentFrame();

      QTextFrame *frame = cursor.insertFrame( TextFormats::codeFrameFormat() );
      parseFrame( cursor, e );
      if ( e.attribute( "type" ) == "code" ) {
        TextFormats::setCodeFrameFormats( frame );
      }

      cursor = parentFrame->lastCursorPosition();
      extraBlock = cursor.block();
      hasExtraBlock = true;
    }
  }
}

void KWQTableView::createPages(QPrinter *printer, QTextDocument *textDoc, bool sendToPrinter)
{
  printer->setFullPage(true);
  int myDpi = printer->logicalDpiY();

  if (Prefs::printStyle() == Prefs::EnumPrintStyle::Flashcard) {
    printer->setOrientation(QPrinter::Landscape);

    int cardWidth = qRound(5 * qreal(myDpi));
    int cardHeight = qRound(3 * qreal(myDpi));

    QTextTable *table = textDoc->rootFrame()->lastCursorPosition().insertTable(model()->rowCount(), 2);

    QTextTableFormat tableFormat = table->format();
    tableFormat.setHeaderRowCount(0);
    tableFormat.setBorderStyle(QTextFrameFormat::BorderStyle_None);
    tableFormat.setCellSpacing(0);
    tableFormat.setCellPadding(0);

    QVector<QTextLength> constraints;
    constraints.append(QTextLength(QTextLength::FixedLength, cardWidth));
    constraints.append(QTextLength(QTextLength::FixedLength, cardWidth));

    tableFormat.setColumnWidthConstraints(constraints);
    table->setFormat(tableFormat);

    QTextBlockFormat headerFormat;
    headerFormat.setAlignment(Qt::AlignLeft);

    QTextCharFormat headerCharFormat;
    headerCharFormat.setFont(QFontDatabase::systemFont(QFontDatabase::GeneralFont));

    QTextBlockFormat cellFormat;
    cellFormat.setAlignment(Qt::AlignCenter);

    QTextCharFormat cellCharFormat;
    cellCharFormat.setFont(Prefs::editorFont());

    QTextFrameFormat cardFormat;
    cardFormat.setBorder(1);
    cardFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Solid);
    cardFormat.setBorderBrush(QBrush(Qt::black));
    cardFormat.setWidth(QTextLength(QTextLength::FixedLength, cardWidth));
    cardFormat.setHeight(QTextLength(QTextLength::FixedLength, cardHeight));
    cardFormat.setPadding(qRound(0.25 * myDpi));

    QTextFrameFormat lineFormat;
    lineFormat.setBorder(1);
    lineFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Solid);
    lineFormat.setBorderBrush(QBrush(Qt::black));
    lineFormat.setWidth(QTextLength(QTextLength::FixedLength, qRound(4.5 * myDpi)));
    lineFormat.setHeight(1.1); //1 is drawn as a box whereas this is drawn as a line. Strange...
    lineFormat.setPadding(0);

    QTextFrame *card;
    for (int i = 0; i < model()->rowCount(); i++) {
      for (int j = 0; j < model()->columnCount(); j++) {
        cardFormat.setPosition(QTextFrameFormat::FloatLeft);
        card = table->cellAt(i, j).firstCursorPosition().insertFrame(cardFormat);
        card->lastCursorPosition().insertText(model()->headerData(j, Qt::Horizontal, Qt::DisplayRole).toString(), headerCharFormat);
        card->lastCursorPosition().insertFrame(lineFormat);
        card->lastCursorPosition().insertBlock();
        card->lastCursorPosition().insertBlock();
        card->lastCursorPosition().insertBlock(cellFormat, cellCharFormat);
        card->lastCursorPosition().insertText(model()->data(model()->index(i, j)).toString(), cellCharFormat);
      }
    }
  }
  else
  {
    textDoc->rootFrame()->lastCursorPosition().insertText(QStringLiteral("kwordquiz %1").arg(KWQ_VERSION));

    if (Prefs::printStyle() == Prefs::EnumPrintStyle::Exam)
      textDoc->rootFrame()->lastCursorPosition().insertText(' ' + i18n("Name:_____________________________ Date:__________"));

    QTextTable* table;
    if (Prefs::printStyle() == Prefs::EnumPrintStyle::Exam)
      table = textDoc->rootFrame()->lastCursorPosition().insertTable(model()->rowCount() + 1, model()->columnCount() + 2);
    else
      table = textDoc->rootFrame()->lastCursorPosition().insertTable(model()->rowCount() + 1, model()->columnCount() + 1);

    QTextTableFormat tableFormat = table->format();
    tableFormat.setHeaderRowCount(1);
    tableFormat.setBorder(1);
    tableFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Solid);
    tableFormat.setCellSpacing(0);
    tableFormat.setBorderBrush(QBrush(Qt::black));
    tableFormat.setCellPadding(2);

    QVector<QTextLength> constraints;
    constraints.append(QTextLength(QTextLength::FixedLength, verticalHeader()->width()));
    constraints.append(QTextLength(QTextLength::FixedLength, columnWidth(0)));
    constraints.append(QTextLength(QTextLength::FixedLength, columnWidth(1)));
    if (Prefs::printStyle() == Prefs::EnumPrintStyle::Exam)
        constraints.append(QTextLength(QTextLength::FixedLength, 50));
    tableFormat.setColumnWidthConstraints(constraints);

    table->setFormat(tableFormat);

    QTextBlockFormat headerFormat;
//.........这里部分代码省略.........